Luang Prabang prov., Pon Xay distr., Houay Man village, Phou Tham Keo Mountain, around point 19°57′44.2′'N 102°25′45.8′'E.
Degraded primary evergreen and semideciduous forest on very steep rocky mountain slopes composed by solid marble like highly eroded limestone at elev. 500-650 m a.s.l.
Woody wine to 10 m long on open mossy rocks on mountain tops. Fruit wings pinkish. Not rare.